3-32 ENGINE
• Install the 45° cutter, attachment and T-handle.
INITIAL SEAT CUT
• Using the 45° cutter, descale and clean up the seat. Rotate
the cutter one or two turns.
• Measure the valve seat width
W after every cut.
• If the valve seat is pitted or burned, use the 45° cutter to con-
dition the seat some more.
NOTE:
Cut only the minimum amount necessary from the seat to pre-
vent the possibility of the valve stem becoming too close to the
camshaft.
TOP NARROWING CUT
• If the contact area
W is too high on the valve, or if it is too
wide, use the 15° cutter to lower and narrow the contact area.
The contact area too high and too
wide on face of valve
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